syzkaller login: [ 38.696494] BUG: Bad rss-counter state mm:0000000078c2f15b type:MM_FILEPAGES val:33 [ 38.697922] BUG: Bad rss-counter state mm:0000000078c2f15b type:MM_ANONPAGES val:22 [ 38.860988] ================================================================== [ 38.861892] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 38.862833] Read of size 8 at addr ffff88800c7b04e0 by task sshd/218 [ 38.863593] [ 38.863814] CPU: 0 PID: 218 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 38.864785] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 38.865758] Call Trace: [ 38.866079] <TASK> [ 38.866387] dump_stack_lvl+0x91/0xf0 [ 38.866891] print_report+0xcc/0x620 [ 38.867377] ? __virt_addr_valid+0x102/0x340 [ 38.867938] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.868555] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.869173] kasan_report+0xbe/0xf0 [ 38.869651] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.870276] vma_interval_tree_remove+0xc75/0xec0 [ 38.870888] vma_prepare+0xc54/0x11a0 [ 38.871365] __split_vma+0x5af/0x950 [ 38.871848] ? __pfx___split_vma+0x10/0x10 [ 38.872381] ? find_held_lock+0x2c/0x110 [ 38.872904] do_vmi_align_munmap+0x2ba/0x11f0 [ 38.873486] ? lock_is_held_type+0x9f/0x120 [ 38.874033] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 38.874675] ? mtree_range_walk+0x632/0x900 [ 38.875235] ? mas_walk+0x5c7/0x7c0 [ 38.875720] do_vmi_munmap+0x1f1/0x2b0 [ 38.876216] mmap_region+0x1f9/0x2660 [ 38.876700] ? vm_mmap_pgoff+0x15c/0x3a0 [ 38.877226] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 38.877948] ? __pfx_lock_acquire+0x10/0x10 [ 38.878486] ? __pfx_mmap_region+0x10/0x10 [ 38.879034] ? security_mmap_addr+0x7d/0xa0 [ 38.879579] ? get_unmapped_area+0x1f5/0x3f0 [ 38.880137] do_mmap+0x854/0xf00 [ 38.880585] vm_mmap_pgoff+0x1a6/0x3a0 [ 38.881091] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 38.881666] ksys_mmap_pgoff+0x3af/0x500 [ 38.882184] do_syscall_64+0x3f/0x90 [ 38.882685] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.883355] RIP: 0033:0x7f016b314d82 [ 38.883817] Code: eb aa 66 0f 1f 44 00 00 41 f7 c1 ff 0f 00 00 75 27 55 48 89 fd 53 89 cb 48 85 ff 74 33 41 89 da 48 89 ef b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 56 5b 5d c3 0f 1f 00 c7 05 ae 03 01 00 16 00 [ 38.885978] RSP: 002b:00007ffe725ba668 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 38.886917] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f016b314d82 [ 38.887776] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f016a74e000 [ 38.888625] RBP: 00007f016a74e000 R08: 0000000000000009 R09: 0000000000001000 [ 38.889486] R10: 0000000000000812 R11: 0000000000000206 R12: 0000564ab8d2ab20 [ 38.890347] R13: 00007ffe725ba680 R14: 00007ffe725ba6b0 R15: 00007ffe725baa10 [ 38.891229] </TASK> [ 38.891525] [ 38.891747] Allocated by task 211: [ 38.892176] kasan_save_stack+0x22/0x50 [ 38.892686] kasan_set_track+0x25/0x30 [ 38.893187] __kasan_slab_alloc+0x59/0x70 [ 38.893709] kmem_cache_alloc+0x16b/0x370 [ 38.894234] vm_area_dup+0x20/0x160 [ 38.894718] __split_vma+0x170/0x950 [ 38.895193] split_vma+0xc6/0x110 [ 38.895636] mprotect_fixup+0x8d2/0xb30 [ 38.896137] do_mprotect_pkey+0x87e/0xd40 [ 38.896656] __x64_sys_mprotect+0x78/0xc0 [ 38.897179] do_syscall_64+0x3f/0x90 [ 38.897656] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.898299] [ 38.898526] Freed by task 13: [ 38.898916] kasan_save_stack+0x22/0x50 [ 38.899420] kasan_set_track+0x25/0x30 [ 38.899918] kasan_save_free_info+0x2b/0x50 [ 38.900445] __kasan_slab_free+0x10a/0x190 [ 38.900983] kmem_cache_free+0x10d/0x4d0 [ 38.901500] rcu_core+0x8c8/0x2860 [ 38.901957] __do_softirq+0x1b7/0x7d4 [ 38.902438] [ 38.902686] Last potentially related work creation: [ 38.903288] kasan_save_stack+0x22/0x50 [ 38.903792] __kasan_record_aux_stack+0x8e/0xa0 [ 38.904371] __call_rcu_common.constprop.0+0x6a/0xb90 [ 38.905031] remove_vma+0x139/0x170 [ 38.905485] do_vmi_align_munmap+0xd4a/0x11f0 [ 38.906044] do_vmi_munmap+0x1f1/0x2b0 [ 38.906546] __vm_munmap+0x138/0x3a0 [ 38.907017] __x64_sys_munmap+0x59/0x80 [ 38.907518] do_syscall_64+0x3f/0x90 [ 38.907991] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.908646] [ 38.908876] The buggy address belongs to the object at ffff88800c7b0488 [ 38.908876] which belongs to the cache vm_area_struct of size 168 [ 38.910370] The buggy address is located 88 bytes inside of [ 38.910370] freed 168-byte region [ffff88800c7b0488, ffff88800c7b0530) [ 38.911792] [ 38.912008] The buggy address belongs to the physical page: [ 38.912660] page:00000000a8d0d6cd refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xc7b0 [ 38.913759] memcg:ffff88800e105801 [ 38.914187] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 38.914914] page_type: 0xffffffff() [ 38.915372] raw: 0100000000000200 ffff8880087a0c80 ffffea00003b5ec0 dead000000000003 [ 38.916300] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800e105801 [ 38.917201] page dumped because: kasan: bad access detected [ 38.917862] [ 38.918077] Memory state around the buggy address: [ 38.918669] ffff88800c7b0380: fc fc fc fc 00 00 00 00 00 00 00 00 00 00 00 00 [ 38.919523] ffff88800c7b0400: 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc [ 38.920380] >ffff88800c7b0480: fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 38.921253] ^ [ 38.922016] ffff88800c7b0500: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fa fb [ 38.922894] ffff88800c7b0580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 38.923754] ================================================================== [ 38.924760] Disabling lock debugging due to kernel taint [ 41.711153] BUG: Bad rss-counter state mm:00000000572ee483 type:MM_FILEPAGES val:33 [ 41.712152] BUG: Bad rss-counter state mm:00000000572ee483 type:MM_ANONPAGES val:22 [ 42.312446] BUG: Bad rss-counter state mm:0000000028a5e27d type:MM_FILEPAGES val:33 [ 42.313650] BUG: Bad rss-counter state mm:0000000028a5e27d type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:19893' (ECDSA) to the list of known hosts. 2023/06/21 05:47:59 fuzzer started 2023/06/21 05:47:59 dialing manager at localhost:36067 2023/06/21 05:47:59 checking machine... 2023/06/21 05:47:59 checking revisions... [ 42.982272] kmemleak: Automatic memory scanning thread ended 2023/06/21 05:47:59 testing simple program... [ 43.022891] cgroup: Unknown subsys name 'net' [ 43.070747] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 05:47:58 Registers: info registers vcpu 0 RAX=1ffffffff0c114ab RBX=0000000000000001 RCX=ffffffff8608a556 RDX=0000000000000000 RSI=dffffc0000000000 RDI=ffffffff8608a558 RBP=ffff88801437f6f0 RSP=ffff88801437f5d8 R8 =ffffffff8608a55a R9 =ffff88801437f6d8 R10=0000000000038001 R11=0000000000003c0d R12=ffff88801437f6f8 R13=ffff88801437f6e0 R14=ffff88801437f740 R15=ffff88801437f698 RIP=ffffffff811311c7 RFL=00000212 [----A--] CPL=0 II=0 A20=1 SMM=0 HLT=0 ES =0000 0000000000000000 00000000 00000000 CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA] SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA] DS =0000 0000000000000000 00000000 00000000 FS =0000 00007fda9934d900 00000000 00000000 GS =0000 ffff88806ce00000 00000000 00000000 LDT=0000 fffffe0000000000 00000000 00000000 TR =0040 fffffe0000003000 00004087 00008b00 DPL=0 TSS64-busy GDT= fffffe0000001000 0000007f IDT= fffffe0000000000 00000fff CR0=80050033 CR2=00007f072e728650 CR3=000000000d72e000 CR4=00350ef0 DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 DR6=00000000ffff0ff0 DR7=0000000000000400 EFER=0000000000000d01 FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001f80 FPR0=0000000000000000 0000 FPR1=0000000000000000 0000 FPR2=0000000000000000 0000 FPR3=0000000000000000 0000 FPR4=0000000000000000 0000 FPR5=0000000000000000 0000 FPR6=0000000000000000 0000 FPR7=0000000000000000 0000 XMM00=ffffffffffffffffffffffffffffffff XMM01=30306234386136303638616663356134 XMM02=38303062343861363036386166633561 XMM03=2f6c616e72756f6a2f676f6c2f6e7572 XMM04=138941ff0f02cca100000000000ae988 XMM05=b1ea73b8236e95250000000000132ff8 XMM06=806171799158d9670000000000131480 XMM07=00000000000000000000000000000000 XMM08=415453454d49545f454d49544c414552 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffff88806cf35000 RBX=0000000000000001 RCX=ffffffff8451250e RDX=ffffed100d9e6a01 RSI=0000000000000004 RDI=ffffffff81288ac5 RBP=dffffc0000000000 RSP=ffff888008e07e70 R8 =0000000000000000 R9 =ffffed100d9e6a00 R10=ffff88806cf35003 R11=ffff888008c04400 R12=ffffffff85d3d350 R13=1ffff110011c0fd3 R14=0000000000000000 R15=0000000000000000 RIP=ffffffff8451349f RFL=00000246 [---Z-P-] CPL=0 II=0 A20=1 SMM=0 HLT=1 ES =0000 0000000000000000 00000000 00000000 CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA] SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA] DS =0000 0000000000000000 00000000 00000000 FS =0000 0000000000000000 00000000 00000000 GS =0000 ffff88806cf00000 00000000 00000000 LDT=0000 fffffe0000000000 00000000 00000000 TR =0040 fffffe000004a000 00004087 00008b00 DPL=0 TSS64-busy GDT= fffffe0000048000 0000007f IDT= fffffe0000000000 00000fff CR0=80050033 CR2=00007ffdcda9b938 CR3=00000000142a2000 CR4=00350ee0 DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 DR6=00000000ffff0ff0 DR7=0000000000000400 EFER=0000000000000d01 FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001f80 FPR0=0000000000000000 0000 FPR1=0000000000000000 0000 FPR2=0000000000000000 0000 FPR3=0000000000000000 0000 FPR4=0000000000000000 0000 FPR5=0000000000000000 0000 FPR6=0000000000000000 0000 FPR7=0000000000000000 0000 XMM00=2038353a37343a3530203132206e754a XMM01=73732878696e755f6d6170203a5d3832 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3832325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732038353a37343a3530203132 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000